Willaed a



(No Model.)

J. A. DAVIS, Decd. W. A. DAVIS, Executor. I

SHUTTLE.

No.353,253. 2L Patented Nov.Z3,1886-.

llllllllllllllmiimn UNITED STATES PATENT OFFICE.

JOB A. DAVIS, OF BOSTON, MASSACHUSETTS; WILLARD DAVIS (EXECUTOR OF SAID JOB A. DAVIS, DECEASED) ASSIGNOR OF ONE-HALF TO LEE E.

MOORE, BOTH OF SAME PLACE.

SHUTTLE.

SPECIPICATIONforming part of Letters Patent No. 35 3,253,dated November 23, 1886.

I Application filed December 32, 1885. Serial No. 186,468. (No model.)

To aZZ whom, it may concern:

Be it known that I, Jon A. DAVIS, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful ImprovementinShuttlesforlVaX-ThreadSewing-llIachines, of which the following, taken in connection with the accompanying drawings, is a specification.

This improvement relates to a novel oscilro lating shuttle for wax-thread sewing-machines,

and constitutes one of a series of improvements embodied in the organized machine rep resented in my application for patent, No. 186,467,filed simultaneously herewith. Parts shown in both these cases are designated by the same letters. h

The invention consists in the peculiar form of shuttle hereinafter deseribed,provided with an offset point adapted to engage directly 2 with the loop formed by the hooked needle in its downward movement, as also in the construction and arrangement of the needle and shuttle relatively to each other.

In the appended drawings, Figure 1 is an 2 elevation of my improved shuttle in position in the frame. Fig. 2 isa sectional elevation thereof on line a: x of Fig. 1. Fig. 3 represents the shuttle removed from the machine; and Fig. 4c, the same with the pivoted cap turned down,exposing the front of the threadcase. Fig. 5 shows in perspective the cop in its case removed from the shuttle, as seen from the rear. Fig. 6 is a detail section on line g 3 of Fig. 1.

The shuttle c is received in a circular recess, f, forrnedin the frameA of the machine, and is oscillated therein by a short shaft, 9, having its bearing in the frame, and by a face-plate, h, in said recess. This face-plate 40 has a plate, secured to it by fixed studs 70 and screws Z as shown in Figs. 1 and 6.

The plate j is of such size and shape as to nearly fill the portion of the recess tnot occupied by the shuttle, so as to actuate the lat- 4 5 ter by contact with it alternately at the points I and m when the shaft g is oscillated, and yet to leave the shuttle loose, with space for the upper thread-loop topass entirely around it. Such loop is formed by the downward movement of the hooked needle, and is held by the needle in position to be engaged by the offset point x on the extension 10 of the shuttle.

The offset point 00 extends laterally beyond the body of the shuttle, so as to be outside or in front of the plane in which the shuttle oscillates or rotates, and said point is thus better adapted to take the loops of needle-thread from a hooked needle, with which said shuttie is specially designed to co-operate, as fully shown and described in my application re ferred to.

After the needle has moved downward to the lowest point, drawing down the threadloop, it moves up slightly before the shuttle point enters the loop, thus slacking the loop and facilitating its engagement with the shuttle-point. When the point x of the shuttle engages the loop, it is drawn out and passed around the shuttle by the oscillating movement thereof.

The shuttle is kept in place in the recess 1 by a plate or arm, d, pivoted to the frame of the machine at e, and secured by a thumbnut, f. (See Figs. 1 and 2.)

The shuttle c is formed with a'recess, a, to receive and hold an oval thread-case, '0, which contains the cop of under thread, 1). The flat front of the thread-case has a cent tral aperture, q, through which the thread 80 p is drawn, passing thence to a central guidehole, 9", formed in the rib s of the shuttle, and preferably in line with the axis on'which it turns. A swinging cap, a, pivoted to the shuttle at o, keeps the thread-case in place or 8 5 permits its removal, as desired.

What I claim is.-

1. A rotary or oscillating sewingmachine shuttle provided with an offset or laterallyprojecting point extending beyond or in front 0 of the plane of any part of revolution of the body of the shuttle, substantially as set forth.

2. A rotary or oscillating sewing-machine shuttle having an offset or laterally-projecting point extending outside of or beyond the to this specification, in the presence of two plane in which any part .ofthe body of the subscribing witnesses, on this 13th day of Noshuttle works, said shuttle having a recess to vember, A. D. 1885. receive the thread and a rib at one side hav- JOB A. DAVIS. 5 ing a thread-delivery hole at the center of ro- Witnesses: tation of the shuttle, substantially as set forth. MILAN F. STEVENS,

In testimony whereof I have signed my name \VILLARD A. DAVIS. 

